Regarding retaining values of a form

I have created two forms containing controls like choice field and textboxes. I need to retain values entered by user in textboxes, values selected by user in choice field during navigation (using next and prev buttons) from one form to another form.

Also I have not used any entity in both forms, as no data mapping is required.

Kindly suggest me some way by which I can retain values entered/selected by user.